* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --success: #16a34a;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --gray-900: #111827;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--gray-900);
  background: var(--gray-50);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1rem;
  width: 100%;
}

/* Navbar */
.navbar {
  background: white;
  border-bottom: 1px solid var(--gray-200);
  padding: 1rem 0;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-links a {
  color: var(--gray-700);
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--primary);
}

.user-name {
  color: var(--gray-500);
  font-size: 0.875rem;
}

.logout-form {
  display: inline;
}

.btn-link {
  background: none;
  border: none;
  color: var(--gray-500);
  cursor: pointer;
  font-size: 0.875rem;
}

.btn-link:hover {
  color: var(--danger);
}

/* Main content */
main {
  flex: 1;
  padding: 2rem 0;
}

/* Footer */
.footer {
  background: white;
  border-top: 1px solid var(--gray-200);
  padding: 1rem 0;
  text-align: center;
  color: var(--gray-500);
  font-size: 0.875rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-secondary {
  background: var(--gray-200);
  color: var(--gray-700);
}

.btn-secondary:hover {
  background: var(--gray-300);
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-danger:hover {
  background: #b91c1c;
}

.btn-sm {
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
}

.btn-block {
  display: block;
  width: 100%;
}

/* Forms */
.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--gray-300);
  border-radius: 0.375rem;
  font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group small {
  color: var(--gray-500);
  font-size: 0.75rem;
}

.form-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  margin-top: 1.5rem;
}

/* Auth pages */
.auth-container {
  max-width: 400px;
  margin: 2rem auto;
  padding: 2rem;
  background: white;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.auth-container h1 {
  margin-bottom: 1.5rem;
  text-align: center;
}

.auth-form {
  margin-top: 1rem;
}

.info-text {
  background: var(--gray-100);
  padding: 0.75rem;
  border-radius: 0.375rem;
  margin-bottom: 1rem;
  font-size: 0.875rem;
}

.login-hint {
  text-align: center;
  color: var(--gray-500);
  font-size: 0.875rem;
  margin: 1rem 0 0.5rem;
}

/* Alerts */
.alert {
  padding: 0.75rem 1rem;
  border-radius: 0.375rem;
  margin-bottom: 1rem;
}

.alert-error {
  background: #fef2f2;
  color: var(--danger);
  border: 1px solid #fecaca;
}

.alert-success {
  background: #f0fdf4;
  color: var(--success);
  border: 1px solid #bbf7d0;
}

.status-message {
  margin-top: 1rem;
  text-align: center;
  color: var(--gray-500);
}

/* Page header */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.page-header h1 {
  font-size: 1.5rem;
}

/* Game cards */
.games-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.game-card {
  background: white;
  border-radius: 0.5rem;
  padding: 1rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.game-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.game-type {
  font-weight: 600;
  color: var(--primary);
}

.game-date {
  color: var(--gray-500);
  font-size: 0.875rem;
}

.game-players {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.player {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.5rem;
  background: var(--gray-100);
  border-radius: 0.25rem;
  font-size: 0.875rem;
}

.player.winner {
  background: #dcfce7;
}

.player-score {
  font-weight: 600;
}

.winner-badge {
  background: var(--success);
  color: white;
  padding: 0.125rem 0.375rem;
  border-radius: 0.25rem;
  font-size: 0.75rem;
}

.game-notes {
  color: var(--gray-500);
  font-size: 0.875rem;
  font-style: italic;
  margin-bottom: 0.75rem;
}

.game-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 0.75rem;
  border-top: 1px solid var(--gray-200);
}

.game-creator {
  color: var(--gray-500);
  font-size: 0.75rem;
}

/* Game form */
.game-form {
  background: white;
  padding: 1.5rem;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.player-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  align-items: center;
}

.player-row select {
  flex: 2;
}

.player-row input[type="number"] {
  flex: 1;
  max-width: 100px;
}

.winner-label {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.875rem;
  white-space: nowrap;
}

.winner-label input {
  width: auto;
}

.btn-remove {
  background: none;
  border: none;
  color: var(--danger);
  cursor: pointer;
  font-size: 0.75rem;
}

/* Game detail */
.game-detail {
  background: white;
  padding: 1.5rem;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.game-meta {
  margin-bottom: 1.5rem;
}

.game-meta p {
  margin-bottom: 0.25rem;
}

.game-results h2,
.game-notes-detail h2 {
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
}

.results-table {
  width: 100%;
  border-collapse: collapse;
}

.results-table th,
.results-table td {
  padding: 0.5rem;
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
}

.results-table th {
  font-weight: 600;
  color: var(--gray-500);
  font-size: 0.875rem;
}

.winner-row {
  background: #f0fdf4;
}

.game-notes-detail {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--gray-200);
}

.game-actions {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--gray-200);
}

/* Invites */
.invites-section {
  margin-bottom: 2rem;
}

.invites-section h2 {
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
}

.invites-table {
  width: 100%;
  background: white;
  border-radius: 0.5rem;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.invites-table th,
.invites-table td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
}

.invites-table th {
  background: var(--gray-50);
  font-weight: 600;
  color: var(--gray-500);
  font-size: 0.875rem;
}

.invite-link {
  font-size: 0.75rem;
  max-width: 200px;
}

.empty-text {
  color: var(--gray-500);
  font-style: italic;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 3rem;
  color: var(--gray-500);
}

/* Error page */
.error-container {
  text-align: center;
  padding: 3rem;
}

.error-container h1 {
  margin-bottom: 1rem;
}

.error-container p {
  margin-bottom: 1.5rem;
  color: var(--gray-500);
}

/* Responsive */
@media (max-width: 600px) {
  .navbar .container {
    flex-direction: column;
    gap: 0.75rem;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .page-header {
    flex-direction: column;
    gap: 0.75rem;
    align-items: flex-start;
  }

  .player-row {
    flex-wrap: wrap;
  }

  .player-row select,
  .player-row input[type="number"] {
    flex: 1 1 100%;
    max-width: none;
  }

  .invites-table {
    font-size: 0.875rem;
  }

  .invite-link {
    max-width: 120px;
  }
}